Governor



W. E. 0RANE;

' Governor.

No. 225,573. Patented Mar. 16, 1880.

WITNESSES: m INVENTOR:

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UNITED STATES PATENT OFFICE.

GOVERNOR.

SPECIFICATION formingpart of Letters Patent No. 225,573, dated March 16, 1880.

Application filed December 9, 1879.

To all whom it may concern Be it known that 1, WILLIAM E. CRANE, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Governors, of which the following is a specification.

The invention consists in reciprocating a slide -valve to regulate the supply of steam and the speed of machinery by connecting a pinion between two straight racks directly with the sleeve of the governor mechanism so as to raise and lower the pinion.

Figure 1 is a vertical section of the governor. Fig. 2 is a horizontal section on linew m of Fig. 1. Fig. 3 is an end elevation, showing the gear mechanism and lower part of the governor.

Similar letters of reference indicate corresponding parts.

A is a tubular standard supporting the rod a of the governor, which rod is revolved by bevelgearing from the shaft b, that is driven by the engine, and upon the upper end of rod a are fitted the balls 0 c, that are connected to the sliding sleeve 01. These parts may be of any usual or desired construction.

B is the valve or gate stem, or a slide-rod connected to the valve or gate stem, and fitted to slide horizontally in suitable guides or supports. 7

In the rod B, contiguous to standard A, is fitted a double rack consisting of the parallel toothed bars 6 c, which are connected a short distance apart, with the tooth of each bar toward the other. Between the rack-bars e e is a pinion, f, on a shaft, g, that is sustained in the boxes h h, and is fitted at one end with a gear-wheel, i, that meshes with a similar wheel, k, on shaft b, whereby shaft g and pinion f are revolved. The shaft may, however,

the pinion f is thereby regulated by the movement of the governor-balls.

In operation the parts are to be adjusted so that at the normal speed of the engine or water-wheel the pinion f shall be sustained midway between the racks e, and in contact with neither. If the speed be checked by extra load the balls 0, falling, will throw pinion f in contact with the lower rack e, and rod B will be moved to open the valve or gate, until the balls rise again by increase of speed. If the speed increases above the normal point, pinion f will be raised and thrown in gear with the upper rack and a reverse movement given to rod B, to close the gate or valve.

By this governor the speed of an engine or water-wheel may be accurately regulated and maintained at the desired point. In case of excessive load, or when steam is entirely shut ofi', the teeth of the pinion will run out of the racks at the ends, so that damage will be prevented.

It will also be seen that should the governor stop and the balls fall from any cause, the valve or gate stem will not be moved to open the valve or gate, as the pinion f will at the same time cease to revolve.

The teeth of the pinion and rack will preferably be made V-shaped to insure meshing.

I am aware that a pinion between curved racks on a pivoted lever, and connected with another lever operated by the governor mechanism, has been used; but this is cumbersome, liable to get out of order, and would not operate a slide-valve.

What I claim as new and of my invention 

